Spine
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Randomized Controlled Trial Multicenter Study Comparative Study
Comparing Heterotopic Ossification in Two Cervical Disc Prostheses.
Retrospective analysis using data from randomized clinical trials. ⋯ 2.
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Comparative Study
Update of Markov Model on the Cost-Effectiveness of Nonpharmacologic Interventions for Chronic Low Back Pain Compared to Usual Care.
Markov model. ⋯ N/A.
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A retrospective cohort study. ⋯ 3.
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A prospective follow-up study. ⋯ 4.